Structure-Property Relationship in Advanced Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Structural Integrity of Metals".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 3256

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Laboratory for Mechanical Properties of Nanostructured Materials and Superalloys, Belgorod State University, 308015 Belgorod, Russia
Interests: mechanical and microstructural characterization of advanced creep-resistant steels and superalloys: heat treatment, creep, low cycle fatigue, long-term aging, impact toughness, phase transformation, dispersed precipitates
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Special Issue Information

Dear Colleagues,

Advanced materials are created based on cutting-edge research. New alloying and microstructural design, supported by the development of new production and processing technologies, make it possible to obtain materials with unique properties. Today, we can observe how a wide range of conventional materials with enhanced properties or new materials have firmly entered our lives: high-strength steels and alloys, heat-resistant materials and superalloys, composites, ODS alloys, high-entropy alloys, metallic glasses, single crystals, ultra-fine grained and nanomaterials, smart materials, shape-memory alloys, etc. The aim of this Special Issue is to present the latest results on the theoretical and experimental investigations of structure–property relationships of different advanced materials.

Dr. Nadezhda Dudova
Guest Editor

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Keywords

  • high-strength steels and alloys
  • heat-resistant austenitic and ferritic-martensitic steels
  • superalloys
  • high-entropy alloys
  • composites
  • metallic glasses
  • single crystals
  • microstructural characterization
  • properties

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Published Papers (1 paper)

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Research

19 pages, 14728 KiB  
Article
Effect of the Thermo-Mechanical Processing on the Impact Toughness of a 12% Cr Martensitic Steel with Co, Cu, W, Mo and Ta Doping
by Alexandra Fedoseeva, Ivan Nikitin, Nadezhda Dudova, John Hald and Rustam Kaibyshev
Metals 2022, 12(1), 3; https://doi.org/10.3390/met12010003 - 21 Dec 2021
Cited by 5 | Viewed by 2617
Abstract
This paper presents the results of an experimental investigation of a 12% Cr steel where a significant increase in Charpy impact toughness and a slight decrease in ductile-brittle transition temperature (DBTT) from 70 °C to 65 °C were obtained through thermo-mechanical processing, including [...] Read more.
This paper presents the results of an experimental investigation of a 12% Cr steel where a significant increase in Charpy impact toughness and a slight decrease in ductile-brittle transition temperature (DBTT) from 70 °C to 65 °C were obtained through thermo-mechanical processing, including interim hot forging at 1050 °C with long-term annealing at 1000 °C, as compared with conventional heat treatment. At lower temperatures ranging from −20 °C to 25 °C, the value of impact toughness comprised ~40 J cm−2 in the present 12% Cr steel subjected to thermo-mechanical processing. The amount of δ-ferrite decreased to 3.8%, whereas the size of prior austenite grains did not change and comprised about 40–50 μm. The boundaries between δ-ferrite and martensitic laths were decorated by continuous chains of Cr- and W-rich carbides. M23C6 carbides also precipitated along the boundaries of prior austenite grains, packets, blocks and martensitic laths. Thermo-mechanical processing increased the mean size of M23C6 carbides and decreased their number particle densities along the lath boundaries. Moreover, the precipitation of a high number of non-equilibrium V-rich MX particles was induced by hot forging and long-term normalizing at 1000 °C for 24 h. Full article
(This article belongs to the Special Issue Structure-Property Relationship in Advanced Materials)
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